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Re: Strange shock (fwd)
Tesla list wrote:
> Original poster: "Daniel Boughton" <daniel_boughton-at-yahoo-dot-com>
> I have seen this effect in un-varnished coils as well.
> It is quite clear to me that we have a DC charging
> effect during coil operation. I have seen this in
> coils of all sizes but most prominently in the
> equidrive (push pull) configuration.'
> While dielectic materials on the coil and the coil
> form(as well as the ambient) hold static charge I do
> not believe we are witnessing effects from teh
> electron cloud around the coil. We are seeing a DC
> storage of energy as a component of the charging
> technique. I bet you will not see this on a continuous
> wave vacuum tube coil, no matter how much varnish you
> have on it.
Another place where charge may be trapped is in the interior of the
coil form, again forming a capacitor with the exterior
windings. The charging system of a Tesla coil can't produce DC
charges in the secondary wire, that for DC is just a grounded wire.
Ionized air, with more charge of one type than of the other due
to rectification effects of corona, can deposit charges everywhere.
Charges deposited in the exterior or interior of the coil, separated
from the wire by a dielectric, become trapped there by a capacitive
What is an equidrive configuration in a Tesla coil?
Antonio Carlos M. de Queiroz